Effect of Heat Source Sliding Contact on the CoPtCr-based Magnetic Recording Disk
Effect of heat source sliding contact on the CoPtCrbased magnetic recording disk was investigated. A tribo-test of the disk with low load heat source and the scan of disk with magnetic head were sequentially carried out. Then disk samples in the contact area were observed by atomic force microscopy (AFM) and magnetic force microscopy (MFM). A finite element model using thermomechanical coupling was developed to calculate the mechanical and thermal response of the disk under heat source sliding contact based on the experimental results. It was found that data loss load under sliding contact with a heat source was far less than that without a heat source, and mechanical scratches and demagnetization did not occur in the data loss area under the experimental conditions. The finite element analysis (FEA) results indicate that the thin surface DLC coating has more significant effect on the mechanical response than the thermal response of the magnetic layer.
heat source sliding contact data loss mechanical scratches demagnetization finite element analysis
Yang Lei Mu Ke Zhan Wenjing Diao Dongfeng
Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, School of Mechanical Engineering, Xian Jiaotong University, Xian 710049, China
国际会议
西安
英文
128-131
2011-05-11（万方平台首次上网日期，不代表论文的发表时间）